Liquid-fuel burner



Feb. 4, 1930.

J. w. H. AINSCOW I LIQUID FUEL BURNER Filed Oct. 5. 192a Jo k WEAWC W,

Inmzbr Paytentvd M 15 f 1,746,180

a I P T" QFFICE 1 TJ'O'SEPH WILLIAM HO ACE AINSGOW, or LrNnFInnn, NEARsrnivnmjnnw scorn"- i WALES, AUSTRALIA I LIQUID-FUELBURNER i'App1ication fi1edteam- 5, 192e, sier 1-No, *'1'3e,e5s, and in AustraliaNovemberfi, 1925.

y This invention'relates to burners used for nozzle 22 whichhas its rearend countersunk atomizing and projecting liquid fuel" into as at 23 andthreadedly connected in the forfurnaces and the like andhas beenspecially wardend of said' stem 14, projecting through devised in orderto provide an improved. liqthe bored'wall 11 and the chamber 9 so that Vuidfuel'burner of simple,eflicient'and durable 1 its'forward end 24which is contracted. and 5v construction whereby thepartsare readilyrehas its moutlrcountersunk as'at 25 will seat movable for cleaningwithout disconnecting in the valve seat 8 at the'rear end of the pasthesupply pipes and in which the regulation sage 7 a nozzle adjuster 26which consistsof the relative volumes or quantities of liquid of a glandlike externallythreaded sleeve 27 1Q fuel-and commingling air, steamor'gas, may and an operable wheel 28 and is revolvable 60 1 be. readilyand independently effected, and upon said stem 14 with its sleeve in thesocket which reduces the, consumption of fuel,is 12, a'hollow connectionand closure 29 with Y practically noiseless-in operation and though itsforward end internally threadedv and conprimarily intended fortheburning of cold nected upon'isaid stem 14 and'having a lateral vits.f-uel atilow pressure incomparativelysmall passage 30 adaptedforconnection to a fuel 5* volume thus rendering preheating oftheliqsupply, and a rear bore'w'all 31,- and in, its uidfuelunnecessary,.may be used with equal rear end a partially threadedstuffing box 32 efficiency with'the fuel under pressure and" to receivepacking and in which is' e'ngageda v when preheated, and'by which maybe'used' glandi33; and a needle valve stem 34 which I 20 any liquidvfuel, s'uch gas crude oil, residual hasan'operable wheel 35 on its rearend and oil,'tar'a'nd tar oil with either air, steam or extends throughthe gland 33 the, connection gas, such as furnace or waste gases. 7 29and the stem 14 and has a threaded portion In order that the inventionand 'a practi- 36 inengagementwith the internally threaded calapplication of thesame will-be readily contraction 2 0 of said stem 14,and 'a reduced p .25 understood the same will be described with forwardportion 37 extending into thejholl'ow reference to the accompanyingdrawings in nozzle 22 and terminating in a coned'end 38. "which isshownalongitudinalsectional: Q16 7 The forward end of the casing 6 isexter vation of the burner with the valve closed, nally reduced toprovidea shoulder 39' and, andicarrying a, flame; concentratorand'aroutwardly thereof is'externally threaded for g V 30 ranged in afreeair furnace mouth cone, engagement -thereon of the so'cketedand'inso l The improved liquid fuel burner comprises; ternal threadedshank 41016 a bell mouth or; a main hollow case 5 which is open at bothdeflector 40,'preferably witlra copper wa'sher ends and has, the forwardend 6 contracted "42 interposed, of requisite diametrical size to forman exit passage 7 having its rear end to freely move within a freeair"cone,zor to valve seated as at 8, an enlarged cavityform' [passthrough an apertured closure affixedin ss. i

V I ing an air or steam chamber 9 from which isql-foi across the furnacemouth. V a lateral passage 10. adapted for connection The burner lssecured to a spider 43 to a source of air, steam*or gas supply, arearpas'sing'the reduced end through an aperture 7 'ward divisionalboredwall ll, and therear 44 in sa1dsp1der and connectlng the deflector40' end enlarged to forman internallythreaded '40 as' showni. Theispider'43 has transverse socket 12 whichhas an internal plainshouL bores45finear'iits lradial extremities and is 1 der 13 at the forward or.inner end; in-said; slidably mounted upon a plurality of spaced socket12 hollow stem'14whichhas at its forarms 46 (preferably three) securediat their V ward end alfian'ge 15, its otherend16 exiinner ends 47 V toand projecting fronia free: i 4 ternally;threaded,f'andin its bore'fl'l'which is air cone 4'8 afiixe'd in thefurnace mouth'sueh 7 recessed andthreaded" at its forward end as as by bolts through apert-ured lugs 49allof at 18 and 19 an annular contraction 20 'inirvhich is l fully,described and claimed in my 7 ternally threaded andhaving throughits-wall copending application filed November 10 i a plurality oflongitudinallyand,circumfer- 1927, Ser al N 2 i, V g p ;50entiallydisposed fuel; passages 21; a hollow j In use, the burner beingconnected atf30 to a fuel supply and toan air or steam supply at 10,fuel will flow through the connection 29 to the hollow stem 14 about thevalve stem 34,thence through the passages 21 into the hollow nozzle 22.By revolving the valve stem 34 its forward valved end 38 may be advancedj into or retired from the contracted end of sa1d nozzle 22 and soregulate the discharge of fuel, and by revolving the adjuster 26, whichis in threaded engagement in the socket 12 of the casing and free torevolve on the hollow stem 14 but is longitudinally held thereto betweenits flange 15 and the closure connector 29 upon'its rear end, said stem14 may be advanced or retired longitudinally and as it carries thehollow nozzle 22 and also the valve stem 34 the nozzle may be advancedor retired in relation to the exit 7 and so regulate the discharge ofair, steam or gas to commingle with the oil issuing from said nozzle,without disturbing adjustment of the valve end 38 in the nozzle 22.

As the nozzle and the valve stem within 7 the casing 5 are carried bythe hollow stem 14 which has thereon the nozzle adjuster 26 which screwsinto the socket 12 of said casing 5, by unscrewing the adjuster from thesocket 12 the whole of the parts may be removed for cleaning withouthaving to break to the chamber 9 is used for atomizing, and

free air which is drawn in around the defiector 40 is used forcombustion.

When a flame to fill alarge area is required a nozzle with a larger exit7 and or a wider countersink 25 may be used without alteration to theother parts of the burner or a plurality of the burners may be used.

The fuel which is fed by gravity or low pressure to the nozzle 22 andhas its disby retiring the deflector 40 in the cone 48. To obtain a longintense flame the air, steam or gas pressure is increased, and thedeflector 40 advanced in the cone 48 as required.

What I claim is I I p A liquid fuel burner comprising a casing having anatomizing chamber therein and a contracted exit within its forward endcommunicating with the chamber, an internally threaded socket formedwith the rear end of said casing, said casing having a lateral fluidsupply passage communicating with the atomlzing chamber thereof, ahollow stem pro ecting in-said socket, an internal contrac- 'tion formedwith said stem and having longihollow connector secured to one end ofsaid vend of'said valve stem and a threaded con nection between saidvalve stem and said in ternal contraction 'of said hollow stem.

' JOSEPH WILLIAM HORACE AlNscow.

charge therefrom regulated, by the valved end 38 of the stem 34 isatomized as it spreads from the countersunk mouth ofthe nozzle into theexit 7 and the pressure of air', s"team or gas from the chamber 9mingles with it, the atomized fuel discharges into and spreads in thedeflector 40, and as it reaches the mouth thereof is carried forward bythe indraught of free air through a free air cone 48 afiixed over thefurnace mouth.

To obtain awide volume of flame the pressure of air, steam or gasentering the chamber 9 is reduced and the nozzle 22 is retired from thevalve seat 80f the exit 7 so that just sufficient air, steam or gas willenter said exit to atomize the full discharging from said nozzle 22,combustion may be regulated

